EP3717056B1 - Filter connection for a smoke evacuation device - Google Patents
Filter connection for a smoke evacuation device Download PDFInfo
- Publication number
- EP3717056B1 EP3717056B1 EP18829469.8A EP18829469A EP3717056B1 EP 3717056 B1 EP3717056 B1 EP 3717056B1 EP 18829469 A EP18829469 A EP 18829469A EP 3717056 B1 EP3717056 B1 EP 3717056B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- socket
- filter
- filter canister
- canister
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000779 smoke Substances 0.000 title claims description 78
- 210000002445 nipple Anatomy 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 10
- 230000037361 pathway Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0012—In-line filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0043—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding containing fixed gas displacement elements or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/005—Electrical coupling combined with fluidic coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00172—Connectors and adapters therefor
- A61B2018/00178—Electrical connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00601—Cutting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
- A61B2218/008—Aspiration for smoke evacuation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/02—Non-permanent measures for connecting different parts of the filter
- B01D2265/024—Mounting aids
- B01D2265/026—Mounting aids with means for avoiding false mounting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/027—Radial sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/35—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for venting arrangements
Definitions
- the present disclosure relates to smoke evacuation systems used in electrosurgical systems. More specifically, the present disclosure relates to apparatus and methods of connecting filters in smoke evacuation systems.
- a monopolar electrosurgical generator system has an active electrode, such as in the form of an electrosurgical instrument having a hand piece and a conductive electrode or tip, which is applied by the surgeon to the patient at the surgical site to perform surgery and a return electrode to connect the patient back to the generator.
- the electrode or tip of the electrosurgical instrument is small at the point of contact with the patient to produce an RF current with a high current density in order to produce a surgical effect of cutting or coagulating tissue through cauterization.
- the return electrode carries the same RF signal provided to the electrode or tip of the electrosurgical instrument, after it passes through the patient, thus providing a path back to the electrosurgical generator.
- Electrosurgical instruments communicate electrical energy to a target tissue of a patient to cut the tissue and/or cauterize blood vessels within and/or near the target tissue. This cutting and cauterization result in smoke released into the air that can be unpleasant and/or obstructive of the view of a practitioner.
- Many electrosurgical systems may therefore employ a smoke evacuation system that captures the resulting smoke and directs it through a filter and exhaust port, away from practitioners and/or patients.
- Smoke evacuation systems typically comprise a pump and a filter.
- the pump creates suction that draws smoke through a vacuum tube into the filter.
- a vacuum tube may terminate at the hand piece that includes the electrode tip so that the smoke is sucked in at the hand piece.
- Other electrosurgical systems may include separate hand pieces that are used to suck the smoke into the system.
- the smoke travels to the filter via a vacuum tube and offensive smells are filtered out as the smoke moves through the filter. Filtered air may then exit the smoke evacuation system as exhaust.
- US5456248A relates to a surgical smoke evacuator that includes a housing, means defining an air flow channel through the housing, and a filter having a longitudinal axis and disposed in the air flow channel with portions of the housing defining an inlet for receiving the filter and a filter cavity for receiving the filter in the air flow channel.
- US7294116B1 relates to a surgical smoke evacuation apparatus that includes a filter assembly removably mounted on a front panel of the apparatus housing and is thus accessible from the front side which typically faces the user.
- the present disclosure relates to smoke evacuation systems. More specifically, the present disclosure relates to a filter connection for a smoke evacuation device. It may be difficult to determine when filters need to be replaced in smoke evacuation systems, and current filter connections can lead to faulty installations.
- the filter connection of the present disclosure may enable easy installation of filters, as well as other features to electronically detect and communicate when filters need to be replaced or when an incorrect filter has been installed.
- the present invention provides a filter connection for a smoke evacuation system includes a filter canister and a socket, as defined in appended claim 1.
- the filter canister comprises first and second ends, a body extending between the first and second ends, a connection nipple, a seal disposed around the connection nipple, and a first electronic connector.
- the socket comprises a first recess configured to receive the canister body, a second recess configured to receive the connection nipple, and a second electronic connector.
- the longitudinal distance between the seal and the first electronic connector is greater than the longitudinal distance between the second recess of the socket and the second electronic connector.
- Another aspect of the present invention provides a method for connecting a filter in a smoke evacuation system, as defined in appended independent method claim 13, the method including the following steps: providing a filter canister; providing a socket in the smoke evacuation system; inserting the filter canister a first distance into the socket so that the filter canister creates an airtight boundary between the filter canister and the socket; and inserting the filter canister a second distance into the socket so that an electronic connection is made between the filter canister and the socket. The second distance is greater than the first distance.
- the present disclosure relates to smoke evacuation systems. More specifically, the present disclosure relates to a filter connection for a smoke evacuation device. It may be difficult to determine when filters need to be replaced in smoke evacuation systems, and current filter connections can lead to faulty installations.
- the filter connection of the present disclosure may enable easy installation of filters, as well as other features to electronically detect and communicate when filters need to be replaced or when an incorrect filter has been installed.
- FIG. 1 illustrates an exemplary electrosurgical system 100.
- the illustrated embodiment includes a signal generator 102, an electrosurgical instrument 104, a return electrode 106, and a smoke evacuation system 120.
- Generator 102 in one embodiment, is an RF wave generator that produces RF electrical energy.
- RF wave generator Connected to electrosurgical instrument 104 is a utility conduit 108.
- utility conduit 108 includes a cable 110 that communicates electrical energy from generator 102 to electrosurgical instrument 104.
- the illustrated utility conduit 108 also includes a vacuum hose 112 that conveys captured/collected smoke and/or fluid away from a surgical site.
- electrosurgical instrument 104 includes a hand piece or pencil 114 and an electrode tip 116.
- Electrosurgical instrument 104 communicates electrical energy to a target tissue of a patient to cut the tissue and/or cauterize blood vessels within and/or near the target tissue.
- an electrical discharge is delivered from electrode tip 116 to the patient in order to cause heating of cellular matter of the patient that is in close contact with or adjacent to electrode tip 116.
- the tissue heating takes place at an appropriately high temperature to allow electrosurgical instrument 104 to be used to perform electrosurgery.
- Return electrode 106 is connected to generator 102 by a cable 118, and is either applied to or placed in close proximity to the patient (depending on the type of return electrode), in order to complete the circuit and provide a return electrical path to wave generator 102 for energy that passes into the patient's body.
- the electrosurgical instrument 104 may comprise a smoke evacuation conduit opening 122 near the electrode tip 116 so as to be able to capture the smoke that is released during a procedure. Vacuum suction may draw the smoke into the conduit opening 122, through the electrosurgical instrument 104, and into the vacuum hose 112 toward the smoke evacuation system 120.
- FIG. 2 illustrates an embodiment of a smoke evacuation system 300.
- the smoke evacuation system 300 may include a filter 306 and an airflow path 308.
- the airflow path 308 may comprise a pump 310 disposed in-line with the airflow path 308 producing a pressure difference within the airflow path 308 by mechanical action. This pressure difference may cause movement of a gas through the airflow path 308.
- the gas drawn through the airflow path 308 may be smoke 302, or the filtered air remaining after the smoke 302 has passed through the filter 306.
- a motor 312 drives the pump 310.
- the smoke evacuation system 300 may also include an exhaust mechanism 314 that may also be disposed in-line with the airflow path 308.
- the exhaust mechanism 314 may be a mechanism that controls the velocity, direction, and/or other properties of the filtered gas 304 exiting the smoke evacuation system 300 at the outlet port 324.
- the airflow path 308 may be disposed between an inlet port 322 and an outlet port 324.
- the smoke 302 may flow into the filter 306 at the inlet port 322, be pumped through the airflow path 308 by the pump 310 so that the smoke 302 is drawn through the filter 306, through the exhaust mechanism 314, and out the outlet port 324 of the smoke evacuation system 300.
- the air exiting the smoke evacuation system 300 at the outlet port 324 may be the exhaust 304.
- the exhaust 304 may consist of filtered air/gas that has passed through the smoke evacuation system 300 and exits through the outlet port 324.
- the airflow path 308 may comprise a first zone 316 and a second zone 318.
- the first zone 316 may be upstream from the pump 306 and the second zone 318 may be downstream from the pump 306.
- the pump 306 may pressurize the air in the airflow path 308 so that the air in the second zone 318 has a higher pressure than the air in the first zone 316.
- the smoke evacuation system 300 may also include a housing 320.
- Figure 2 illustrates a cross-sectional view of a smoke evacuation system 300 to show the various components within the housing 320.
- the housing 320 may completely or partially encompass the smoke evacuation system 300.
- the airflow path 308 may be at least partially comprised of a tube or other conduit that substantially contains and/or isolates the air moving through the airflow path 308 from air outside the airflow path 308.
- the first zone 316 of the airflow path 308 may comprise a tube through which the airflow path 308 extends between the filter 306 and the pump 310.
- the second zone 318 of the airflow path 308 may also comprise a tube through which the airflow path 308 extends between the pump 310 and the exhaust mechanism 314.
- the airflow path 308 also extends through the filter 306, pump 310, and exhaust mechanism 314 so that a continuous airflow path 308 extends from the inlet port 322 to the outlet port 324.
- FIG 3A illustrates a perspective view of a smoke evacuation system 300.
- the smoke evacuation system 300 may include a socket 326 configured to receive a filter 306.
- the filter 306 is not shown in Figure 3 in order to illustrate the socket 326.
- the socket 326 may have a first recess 328 and a second recess 332.
- a transition surface 330 extends between the first recess 328 and the second recess 332.
- the socket 326 may be shaped to receive a filter 306 into the socket so that the filter 306 fits snuggly into the socket 326.
- Figure 3B illustrates a cross-sectional view of the smoke evacuation system 300 of Figure 3A.
- Figure 3B illustrates a cross-sectional view of plane 334 illustrated in Figure 3A that passes through the socket 326.
- the socket comprises a first end 336 that is open to receive a filter 306 and a second end 338 in communication with the airflow path 308.
- a filter 306 may be inserted and removed from the first end 336 of the socket 326.
- the socket 326 may also include a transition surface 330 configured to receive a second end of a filter canister assembly, a second recess 332 configured to receive a connection nipple, and an electronic connector 340. More details regarding filter canister assembly, including the body, second end, connection nipple, and electronic connector will be given hereafter.
- Figures 4A through 4C illustrate various views of an embodiment of a filter canister assembly 342.
- Figure 4A illustrates a perspective view of the filter canister assembly 342.
- the filter canister assembly 342 may include a first end 344 and a second end 346.
- the second end 346 of the filter canister 342 may be at least partially conical.
- a canister body 348 may be disposed between the first end 344 and the second end 346 of the canister assembly 342.
- the filter canister assembly 342 may be configured to be inserted into the socket 326 of the smoke evacuation system 300.
- a plate 350 may be disposed on the first end 344 of the canister assembly 342 so that the canister assembly 342 may not be inserted too far into the socket 326.
- the plate 350 makes contact with the outer housing 320 and/or the second end 346 of the canister assembly 342 abuts the transition surface 330 of the socket 326 so that the canister assembly 342 may not be inserted further.
- the second end 346 and the body 348 of the canister assembly 342 may be able to fit into the socket 326, but the plate 350 may not.
- the canister assembly 342 may be inserted until the plate 350 comes into contact with the outer housing 320 of the smoke evacuation system 300.
- the plate 350 may include an inlet port 322 such as the inlet port 322 discussed above with reference to Figure 2 .
- the vacuum hose 112 illustrated in Figure 1 may connect to the inlet port 322 so that smoke may travel through the vacuum hose 112 and into the filter canister assembly 342 at the inlet port 322.
- Smoke may enter at the inlet port 322 and move through an inner pathway of the filter 306 disposed within the body 348 of the filter canister assembly 342. Potentially harmful and/or unpleasant toxins and particulates may become trapped in the filter 306 as the smoke moves through the filter 306.
- the filtered gas remaining after filtration may exit the filter canister assembly 342 through the canister outlet 352 illustrated in Figure 4B .
- the filter canister assembly 342 may be inserted into the socket 326 of the smoke evacuation system 300 so that the canister outlet 352 communicates with the airflow path 308.
- Figure 4B illustrates a perspective view of the second end 346 of the filter canister assembly 342.
- the second end 346 may include a connection nipple 354 surrounding the canister outlet 352 and a first electronic connector 356.
- the first electronic connector may be an erasable programmable read-only memory (EPROM) connector.
- the first electronic programmable connector 356 may be a male connector.
- Other embodiments may include a first electronic programmable connector that is a female connector.
- the second end 346 of the canister assembly 342 may also include a seal 358 disposed around the connection nipple 354. More details regarding the connection nipple 354, seal 358, and electronic programmable connector 356 will be given hereafter in reference to Figure 6A and Figure 6B .
- Figure 5A illustrates the cross-sectional shape of the second end of a filter canister 360 and the cross-sectional shape of the first recess of a socket 361.
- the cross-sectional shape of the second end of the filter canister 360 may be similar to the cross-sectional shape of the first recess of the socket 361 and only slightly smaller so that the filter canister assembly 360 may fit snuggly into the socket 361 when inserted.
- the cross-sectional shape of the second end of the canister assembly 360 may be slightly smaller than the cross-sectional shape of the first recess of the socket 361 so that the filter canister 360 may be inserted therein.
- Figure 5A illustrates teardrop shaped cross-sections 360, 361.
- a teardrop cross sectional shape 360, 361 may ensure that the filter canister 360 may only be inserted in a particular orientation so that the filter canister 360 fits into the socket 361.
- Other embodiments may include cross-sectional shapes that are different from the teardrop shape illustrated in Figure 5A .
- Other embodiments may include any other cross-sectional shapes so long as the cross-sectional shape limits the canister assembly 360 to being inserted into the socket 361 in only one orientation.
- the cross-sectional shape 360, 361 may be a triangle having only one line of symmetry.
- Other embodiments may include other cross-sectional shapes that only have one line of symmetry. Limiting the canister assembly 342 to a single orientation may assure that the filter canister 360 is inserted correctly into the socket 361.
- Figure 5B illustrates another cross-sectional shape of a filter canister 362.
- the shape 362 shown in Figure 5B is similar to the shape 360, 361 shown in Figure 5A , except the cross-sectional shape 362 includes a key notch 364.
- the socket cross-sectional shape has a corresponding key groove 365.
- Figure 5C illustrates a canister assembly 342 that includes a second end 346 having a cross-sectional shape 362 as shown in Figure 5B .
- Figure 5D illustrates a smoke evacuation system 300 that includes a socket 326 having a first recess 328 with a cross-sectional shape 362 as shown in Figure 5B .
- the key notch 366 of the second end 346 of the canister assembly 342 must align with a key groove 368 of the first recess 328 of the socket 326 in order to be inserted.
- the key notch 366 and groove 368 may further assure that the canister assembly 342 is properly inserted into the socket 326.
- Other embodiments of shapes 360 and 362 are contemplated herein. For example, a circular or square shape with a key notch 364 may also be used.
- a canister assembly 342 may also include a body 348 that also has a cross-sectional shape shown in Figures 5A and 5B and described herein so that the shape of the body 348 corresponds to the socket 326 when it is inserted.
- the key notch 366 may extend along the whole length of the body 348 of the canister assembly 342 and the key groove 368 may not extend along the whole length of the first recess 328 of the socket 326. In other embodiments, the key notch 366 may extend along the whole length of the body 348 of the canister assembly 342 and the key groove 368 may extend along the whole length of the first recess 328 of the socket 326. In any of the embodiments described herein, the key notch 366 and groove 368 may be configured such that the canister assembly 342 may not be rotated/twisted within the socket 326 once the canister assembly 342 has been inserted into the socket 326.
- the second electronic connector 340 may be an EPROM connector.
- the second electronic connector 340 may be disposed within the socket 326 as illustrated in Figure 3B .
- the first electronic memory 356 may be disposed at the second end 346 of the canister assembly 342 as shown in Figure 4B .
- the first and second electronic connectors 356, 340 may be thus disposed so that when the canister assembly 346 and the first recess 328 of the socket 326 are aligned properly, the first and second electronic connectors 356, 340 meet when the canister assembly 342 is fully inserted into the socket 326.
- the first electronic connector 356 is disposed at an upper edge of the second end 346 of the canister assembly 342. This location corresponds to the location of the second electronic connector 340 disposed within the socket 326 as shown in Figure 6A .
- Other embodiments may include first and second electronic connectors 356, 340 that are positioned at various locations on the second end 346 of the canister assembly 342 and in the socket 326. Any location is suitable so long as the first and second electronic connectors 356, 340 make contact when the canister assembly 342 is inserted into the socket 326.
- the electronic memory may relay information to a user or other components of the smoke evacuation system 342 regarding the filter. Such information may include, but is not limited to, the number of times the filter has been used, whether it is the correct filter, whether the filter is still functioning properly, how much life/filtration capacity is left in the filter, and so forth. This connection enables safe, reliable, and efficient use of filters that need to be periodically replaced.
- the electronic memory may also be used to signal that a filter has been inserted properly and activate the smoke evacuation system 300.
- Figure 6A and 6B illustrate an embodiment of canister assembly 342 inserted into socket 326.
- Figure 6A illustrates canister assembly 342 partially inserted into the socket 326
- Figure 6B illustrates a canister assembly 342 fully inserted into the socket 326.
- the canister assembly 342 is partially inserted into the socket 326 so that the connection nipple 354 is received by the second recess 332 of the socket 326.
- the seal 358 surrounding the connection nipple 354 makes contact with the inner surface of the second recess 332, creating a sealed path for a filtered gas exiting the canister assembly 342 at the canister outlet 352 to enter the airflow path 308 of the smoke evacuation system 300.
- the seal 358 may be an O-ring. Other embodiments may include other seals 358.
- the seal 358 makes contact with the inner walls of the second recess 332 to create a seal between the connection nipple 354 and the second recess 332 before the canister assembly 342 has been fully inserted into the socket 326.
- the plate 350 does not contact the outer housing 320 of the smoke evacuation system 300 and the first and second electronic connectors 356, 340 do not make contact with one another.
- Figure 6B illustrates a canister assembly 342 fully inserted into the socket 326.
- the seal 358 maintains a seal around the connection nipple 354 within the second recess 332.
- the plate 350 makes contact with the outer housing 320 and/or the second end 346 of the canister assembly 342 abuts the transition surface 330 of the socket 326 so that the canister assembly 342 may not be inserted further.
- the first and second electronic connectors 356, 340 contact one another. The electronic connection may then function as described above.
- the electronic connection may activate or allow for activation of the smoke evacuation system 300 so that a suction begins drawing smoke into the filter 306 through the vacuum tube 112.
- the seal creates an airtight boundary between the connection nipple 354 and the second recess 332 of the socket 326 before the first and second electronic connectors 356, 340 meet.
- the longitudinal distance D1 between the seal 358 and the first electronic connector 356 may be greater than the longitudinal distance D2 between the second recess 332 of the socket 326 and the second electronic connector 340. Longitudinal distances D1 and D2 are labeled in Figure 6A .
- the first electronic connector 356 may be disposed at the first end 344 of the filter canister 342 and the second electronic connector 340 may be disposed at or near the plate 350.
- the longitudinal distance between the seal 458 and the first electronic connector 356 may still be greater than the longitudinal distance between the second recess 332 of the socket 326 and the second electronic connector 340 so that a seal is created for smoke to pass through into the airflow path 308 before the first and second electronic connectors 356, 340 meet.
- both the first and second electronic connectors 356, 340 may be disposed at various locations on the filter canister 342 and in the socket 326 so long as the relationship between the longitudinal distances mentioned above remain the same.
- These configurations ensure that the smoke evacuation system 300 will not be activated until the seal has been created so that filtered gas may not exit the canister outlet 352 until a closed path in communication with the airflow path 308 has been established. These configurations may prevent leakage of filtered gas exiting the canister assembly 342 at the canister outlet 352. These configurations may also ensure that the smoke evacuation system 300 does not begin drawing smoke through the filter 306 until the filter canister assembly 342 is inserted fully and properly into the socket 326.
- FIG. 7 illustrates a method for connecting a filter canister to a smoke evacuation system 370.
- a filter canister is provided.
- the filter canister may include a body disposed between first and second ends, a connection nipple disposed at the second end, a seal disposed around the connection nipple, a key notch, a cross-sectional shape, and a first electronic connector.
- a second step 374 may include aligning the cross-sectional shape of the filter canister with a cross-sectional shape of the socket.
- the socket may comprise a first recess configured to receive the body of the filter canister, a second recess configured to receive the connection nipple, a transition surface connecting the first and second recesses, and a second electronic connector.
- a third step 376 may include inserting the filter canister partially into the socket until the seal creates an airtight boundary between the connection nipple of the filter canister and the second recess of the socket.
- a fourth step 378 may include inserting the filter canister further into the socket until the second end of the filter canister makes contact with the transition surface of the socket and until the first and second electronic connectors come into contact with one another.
- the method of inserting the filter canister described herein creates an airtight boundary between the connection nipple of the canister and the second recess of the socket before the electronic connection is made.
- the electronic memory which may be configured to activate the smoke evacuation system, will not be connected until a sealed path that leads from the connection nipple to the airflow path of the smoke evacuation system has been established. This method may thus prevent filtered gas from leaking out of the filter canister before it is fully installed into the socket of the smoke evacuation system.
Description
- The present disclosure relates to smoke evacuation systems used in electrosurgical systems. More specifically, the present disclosure relates to apparatus and methods of connecting filters in smoke evacuation systems.
- As is known to those skilled in the art, modern surgical techniques typically employ radio frequency (RF) power to cut tissue and coagulate bleeding encountered in performing surgical procedures. Such electrosurgery is widely used and offers many advantages including the use of a single surgical instrument for both cutting and coagulation. A monopolar electrosurgical generator system has an active electrode, such as in the form of an electrosurgical instrument having a hand piece and a conductive electrode or tip, which is applied by the surgeon to the patient at the surgical site to perform surgery and a return electrode to connect the patient back to the generator.
- The electrode or tip of the electrosurgical instrument is small at the point of contact with the patient to produce an RF current with a high current density in order to produce a surgical effect of cutting or coagulating tissue through cauterization. The return electrode carries the same RF signal provided to the electrode or tip of the electrosurgical instrument, after it passes through the patient, thus providing a path back to the electrosurgical generator.
- Electrosurgical instruments communicate electrical energy to a target tissue of a patient to cut the tissue and/or cauterize blood vessels within and/or near the target tissue. This cutting and cauterization result in smoke released into the air that can be unpleasant and/or obstructive of the view of a practitioner. Many electrosurgical systems may therefore employ a smoke evacuation system that captures the resulting smoke and directs it through a filter and exhaust port, away from practitioners and/or patients.
- Smoke evacuation systems typically comprise a pump and a filter. The pump creates suction that draws smoke through a vacuum tube into the filter. A vacuum tube may terminate at the hand piece that includes the electrode tip so that the smoke is sucked in at the hand piece. Other electrosurgical systems may include separate hand pieces that are used to suck the smoke into the system. The smoke travels to the filter via a vacuum tube and offensive smells are filtered out as the smoke moves through the filter. Filtered air may then exit the smoke evacuation system as exhaust.
US5456248A relates to a surgical smoke evacuator that includes a housing, means defining an air flow channel through the housing, and a filter having a longitudinal axis and disposed in the air flow channel with portions of the housing defining an inlet for receiving the filter and a filter cavity for receiving the filter in the air flow channel.US7294116B1 relates to a surgical smoke evacuation apparatus that includes a filter assembly removably mounted on a front panel of the apparatus housing and is thus accessible from the front side which typically faces the user. - The subject matter claimed herein is not limited to embodiments that solve any disadvantages or that operate only in environments such as those described above. Rather, this background is only provided to illustrate one exemplary technology area where some embodiments described herein may be practiced.
- The present disclosure relates to smoke evacuation systems. More specifically, the present disclosure relates to a filter connection for a smoke evacuation device. It may be difficult to determine when filters need to be replaced in smoke evacuation systems, and current filter connections can lead to faulty installations. The filter connection of the present disclosure may enable easy installation of filters, as well as other features to electronically detect and communicate when filters need to be replaced or when an incorrect filter has been installed.
- The present invention provides a filter connection for a smoke evacuation system includes a filter canister and a socket, as defined in appended claim 1. The filter canister comprises first and second ends, a body extending between the first and second ends, a connection nipple, a seal disposed around the connection nipple, and a first electronic connector. The socket comprises a first recess configured to receive the canister body, a second recess configured to receive the connection nipple, and a second electronic connector. The longitudinal distance between the seal and the first electronic connector is greater than the longitudinal distance between the second recess of the socket and the second electronic connector.
- Another aspect of the present invention provides a method for connecting a filter in a smoke evacuation system, as defined in appended independent method claim 13, the method including the following steps: providing a filter canister; providing a socket in the smoke evacuation system; inserting the filter canister a first distance into the socket so that the filter canister creates an airtight boundary between the filter canister and the socket; and inserting the filter canister a second distance into the socket so that an electronic connection is made between the filter canister and the socket. The second distance is greater than the first distance.
- This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
- Additional features and advantages of the disclosed embodiments will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. These and other features will become more fully apparent from the following description and appended claims, or may be learned by the practice of the present disclosure.
- To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only illustrated embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
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Figure 1 illustrates an exemplary electrosurgical system; -
Figure 2 illustrates a schematic of an embodiment of a smoke evacuation system; -
Figure 3A illustrates a perspective view of an embodiment of a smoke evacuation system; -
Figure 3B illustrates a cross-sectional view of the system illustrated inFigure 3A , wherein an embodiment of a socket is shown; -
Figure 4A illustrates a perspective view of an embodiment of a filter canister assembly; -
Figure 4B illustrates a perspective view of an embodiment of a filter canister assembly; -
Figure 5A illustrates a schematic of a cross-sectional shape of one end of a filter canister assembly and an opening of a socket; -
Figure 5B illustrates a schematic of a cross-sectional shape of one end of a filter canister assembly and an opening of a socket; -
Figure 5C illustrates a perspective view of an embodiment of a filter canister; -
Figure 5D illustrates a perspective view of an embodiment of a socket of a smoke evacuation system; -
Figure 6A illustrates a cross-sectional view of a filter canister assembly partially inserted into a socket; -
Figure 6B illustrates a cross-sectional view of a filter canister assembly fully inserted into a socket; and -
Figure 7 illustrates a flow chart describing a method for connecting a canister to a smoke evacuation system. - The present disclosure relates to smoke evacuation systems. More specifically, the present disclosure relates to a filter connection for a smoke evacuation device. It may be difficult to determine when filters need to be replaced in smoke evacuation systems, and current filter connections can lead to faulty installations. The filter connection of the present disclosure may enable easy installation of filters, as well as other features to electronically detect and communicate when filters need to be replaced or when an incorrect filter has been installed.
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Figure 1 illustrates an exemplaryelectrosurgical system 100. The illustrated embodiment includes asignal generator 102, an electrosurgical instrument 104, areturn electrode 106, and asmoke evacuation system 120.Generator 102, in one embodiment, is an RF wave generator that produces RF electrical energy. Connected to electrosurgical instrument 104 is autility conduit 108. In the illustrated embodiment,utility conduit 108 includes acable 110 that communicates electrical energy fromgenerator 102 to electrosurgical instrument 104. The illustratedutility conduit 108 also includes avacuum hose 112 that conveys captured/collected smoke and/or fluid away from a surgical site. - Generally, electrosurgical instrument 104 includes a hand piece or
pencil 114 and anelectrode tip 116. Electrosurgical instrument 104 communicates electrical energy to a target tissue of a patient to cut the tissue and/or cauterize blood vessels within and/or near the target tissue. Specifically, an electrical discharge is delivered fromelectrode tip 116 to the patient in order to cause heating of cellular matter of the patient that is in close contact with or adjacent toelectrode tip 116. The tissue heating takes place at an appropriately high temperature to allow electrosurgical instrument 104 to be used to perform electrosurgery.Return electrode 106 is connected togenerator 102 by acable 118, and is either applied to or placed in close proximity to the patient (depending on the type of return electrode), in order to complete the circuit and provide a return electrical path to wavegenerator 102 for energy that passes into the patient's body. - The heating of cellular matter of the patient by the
electrode tip 116, or cauterization of blood vessels to prevent bleeding, results in smoke being released where the cauterization takes place. The electrosurgical instrument 104 may comprise a smoke evacuation conduit opening 122 near theelectrode tip 116 so as to be able to capture the smoke that is released during a procedure. Vacuum suction may draw the smoke into the conduit opening 122, through the electrosurgical instrument 104, and into thevacuum hose 112 toward thesmoke evacuation system 120. -
Figure 2 illustrates an embodiment of asmoke evacuation system 300. Thesmoke evacuation system 300 may include afilter 306 and anairflow path 308. Theairflow path 308 may comprise apump 310 disposed in-line with theairflow path 308 producing a pressure difference within theairflow path 308 by mechanical action. This pressure difference may cause movement of a gas through theairflow path 308. The gas drawn through theairflow path 308 may besmoke 302, or the filtered air remaining after thesmoke 302 has passed through thefilter 306. Amotor 312 drives thepump 310. - The
smoke evacuation system 300 may also include anexhaust mechanism 314 that may also be disposed in-line with theairflow path 308. Theexhaust mechanism 314 may be a mechanism that controls the velocity, direction, and/or other properties of the filteredgas 304 exiting thesmoke evacuation system 300 at theoutlet port 324. - The
airflow path 308 may be disposed between aninlet port 322 and anoutlet port 324. Thesmoke 302 may flow into thefilter 306 at theinlet port 322, be pumped through theairflow path 308 by thepump 310 so that thesmoke 302 is drawn through thefilter 306, through theexhaust mechanism 314, and out theoutlet port 324 of thesmoke evacuation system 300. The air exiting thesmoke evacuation system 300 at theoutlet port 324 may be theexhaust 304. Theexhaust 304 may consist of filtered air/gas that has passed through thesmoke evacuation system 300 and exits through theoutlet port 324. - The
airflow path 308 may comprise afirst zone 316 and asecond zone 318. Thefirst zone 316 may be upstream from thepump 306 and thesecond zone 318 may be downstream from thepump 306. Thepump 306 may pressurize the air in theairflow path 308 so that the air in thesecond zone 318 has a higher pressure than the air in thefirst zone 316. - The
smoke evacuation system 300 may also include ahousing 320.Figure 2 illustrates a cross-sectional view of asmoke evacuation system 300 to show the various components within thehousing 320. Thehousing 320 may completely or partially encompass thesmoke evacuation system 300. Theairflow path 308 may be at least partially comprised of a tube or other conduit that substantially contains and/or isolates the air moving through theairflow path 308 from air outside theairflow path 308. - For example, the
first zone 316 of theairflow path 308 may comprise a tube through which theairflow path 308 extends between thefilter 306 and thepump 310. Thesecond zone 318 of theairflow path 308 may also comprise a tube through which theairflow path 308 extends between thepump 310 and theexhaust mechanism 314. Theairflow path 308 also extends through thefilter 306, pump 310, andexhaust mechanism 314 so that acontinuous airflow path 308 extends from theinlet port 322 to theoutlet port 324. -
Figure 3A illustrates a perspective view of asmoke evacuation system 300. Thesmoke evacuation system 300 may include asocket 326 configured to receive afilter 306. Thefilter 306 is not shown inFigure 3 in order to illustrate thesocket 326. Thesocket 326 may have afirst recess 328 and asecond recess 332. Atransition surface 330 extends between thefirst recess 328 and thesecond recess 332. Thesocket 326 may be shaped to receive afilter 306 into the socket so that thefilter 306 fits snuggly into thesocket 326. -
Figure 3B illustrates a cross-sectional view of thesmoke evacuation system 300 ofFigure 3A. Figure 3B illustrates a cross-sectional view ofplane 334 illustrated inFigure 3A that passes through thesocket 326. As shown inFigure 3B , the socket comprises afirst end 336 that is open to receive afilter 306 and asecond end 338 in communication with theairflow path 308. Afilter 306 may be inserted and removed from thefirst end 336 of thesocket 326. - The
socket 326 may also include atransition surface 330 configured to receive a second end of a filter canister assembly, asecond recess 332 configured to receive a connection nipple, and anelectronic connector 340. More details regarding filter canister assembly, including the body, second end, connection nipple, and electronic connector will be given hereafter. -
Figures 4A through 4C illustrate various views of an embodiment of afilter canister assembly 342.Figure 4A illustrates a perspective view of thefilter canister assembly 342. Thefilter canister assembly 342 may include afirst end 344 and asecond end 346. Thesecond end 346 of thefilter canister 342 may be at least partially conical. Acanister body 348 may be disposed between thefirst end 344 and thesecond end 346 of thecanister assembly 342. Thefilter canister assembly 342 may be configured to be inserted into thesocket 326 of thesmoke evacuation system 300. - A
plate 350 may be disposed on thefirst end 344 of thecanister assembly 342 so that thecanister assembly 342 may not be inserted too far into thesocket 326. When thecanister assembly 342 has been fully inserted into thesocket 326, theplate 350 makes contact with theouter housing 320 and/or thesecond end 346 of thecanister assembly 342 abuts thetransition surface 330 of thesocket 326 so that thecanister assembly 342 may not be inserted further. Thesecond end 346 and thebody 348 of thecanister assembly 342 may be able to fit into thesocket 326, but theplate 350 may not. Thecanister assembly 342 may be inserted until theplate 350 comes into contact with theouter housing 320 of thesmoke evacuation system 300. Theplate 350 may include aninlet port 322 such as theinlet port 322 discussed above with reference toFigure 2 . Thevacuum hose 112 illustrated inFigure 1 may connect to theinlet port 322 so that smoke may travel through thevacuum hose 112 and into thefilter canister assembly 342 at theinlet port 322. - Smoke may enter at the
inlet port 322 and move through an inner pathway of thefilter 306 disposed within thebody 348 of thefilter canister assembly 342. Potentially harmful and/or unpleasant toxins and particulates may become trapped in thefilter 306 as the smoke moves through thefilter 306. The filtered gas remaining after filtration may exit thefilter canister assembly 342 through thecanister outlet 352 illustrated inFigure 4B . Thefilter canister assembly 342 may be inserted into thesocket 326 of thesmoke evacuation system 300 so that thecanister outlet 352 communicates with theairflow path 308. -
Figure 4B illustrates a perspective view of thesecond end 346 of thefilter canister assembly 342. Thesecond end 346 may include aconnection nipple 354 surrounding thecanister outlet 352 and a firstelectronic connector 356. In one embodiment, the first electronic connector may be an erasable programmable read-only memory (EPROM) connector. The first electronicprogrammable connector 356 may be a male connector. Other embodiments may include a first electronic programmable connector that is a female connector. Thesecond end 346 of thecanister assembly 342 may also include aseal 358 disposed around theconnection nipple 354. More details regarding theconnection nipple 354,seal 358, and electronicprogrammable connector 356 will be given hereafter in reference toFigure 6A andFigure 6B . -
Figure 5A illustrates the cross-sectional shape of the second end of afilter canister 360 and the cross-sectional shape of the first recess of asocket 361. The cross-sectional shape of the second end of thefilter canister 360 may be similar to the cross-sectional shape of the first recess of thesocket 361 and only slightly smaller so that thefilter canister assembly 360 may fit snuggly into thesocket 361 when inserted. The cross-sectional shape of the second end of thecanister assembly 360 may be slightly smaller than the cross-sectional shape of the first recess of thesocket 361 so that thefilter canister 360 may be inserted therein. -
Figure 5A illustrates teardrop shapedcross-sections sectional shape filter canister 360 may only be inserted in a particular orientation so that thefilter canister 360 fits into thesocket 361. Other embodiments may include cross-sectional shapes that are different from the teardrop shape illustrated inFigure 5A . Other embodiments may include any other cross-sectional shapes so long as the cross-sectional shape limits thecanister assembly 360 to being inserted into thesocket 361 in only one orientation. - For example, in one embodiment, the
cross-sectional shape canister assembly 342 to a single orientation may assure that thefilter canister 360 is inserted correctly into thesocket 361. -
Figure 5B illustrates another cross-sectional shape of afilter canister 362. Theshape 362 shown inFigure 5B is similar to theshape Figure 5A , except thecross-sectional shape 362 includes akey notch 364. The socket cross-sectional shape has a correspondingkey groove 365.Figure 5C illustrates acanister assembly 342 that includes asecond end 346 having across-sectional shape 362 as shown inFigure 5B .Figure 5D illustrates asmoke evacuation system 300 that includes asocket 326 having afirst recess 328 with across-sectional shape 362 as shown inFigure 5B . Thekey notch 366 of thesecond end 346 of thecanister assembly 342 must align with akey groove 368 of thefirst recess 328 of thesocket 326 in order to be inserted. Thekey notch 366 and groove 368 may further assure that thecanister assembly 342 is properly inserted into thesocket 326. Other embodiments ofshapes key notch 364 may also be used. - Other embodiments may include more than one
key notch 366 and groove 368 at various locations around the crosssectional shape 362 so that multiplekey notches 366 andgrooves 368 on thecanister assembly 342 andsocket 326 must be aligned before thecanister assembly 342 is inserted into thesocket 326. Some embodiments of acanister assembly 342 may also include abody 348 that also has a cross-sectional shape shown inFigures 5A and 5B and described herein so that the shape of thebody 348 corresponds to thesocket 326 when it is inserted. - In some embodiments, the
key notch 366 may extend along the whole length of thebody 348 of thecanister assembly 342 and thekey groove 368 may not extend along the whole length of thefirst recess 328 of thesocket 326. In other embodiments, thekey notch 366 may extend along the whole length of thebody 348 of thecanister assembly 342 and thekey groove 368 may extend along the whole length of thefirst recess 328 of thesocket 326. In any of the embodiments described herein, thekey notch 366 and groove 368 may be configured such that thecanister assembly 342 may not be rotated/twisted within thesocket 326 once thecanister assembly 342 has been inserted into thesocket 326. - One of the reasons it is important to ensure that the
canister assembly 342 is inserted in the correct orientation is so that the first and secondelectronic connectors electronic connector 340 may be an EPROM connector. The secondelectronic connector 340 may be disposed within thesocket 326 as illustrated inFigure 3B . The firstelectronic memory 356 may be disposed at thesecond end 346 of thecanister assembly 342 as shown inFigure 4B . The first and secondelectronic connectors canister assembly 346 and thefirst recess 328 of thesocket 326 are aligned properly, the first and secondelectronic connectors canister assembly 342 is fully inserted into thesocket 326. - In the illustrated embodiment of
Figures 4B , the firstelectronic connector 356 is disposed at an upper edge of thesecond end 346 of thecanister assembly 342. This location corresponds to the location of the secondelectronic connector 340 disposed within thesocket 326 as shown inFigure 6A . Other embodiments may include first and secondelectronic connectors second end 346 of thecanister assembly 342 and in thesocket 326. Any location is suitable so long as the first and secondelectronic connectors canister assembly 342 is inserted into thesocket 326. - Once the first and second
electronic connectors smoke evacuation system 342 regarding the filter. Such information may include, but is not limited to, the number of times the filter has been used, whether it is the correct filter, whether the filter is still functioning properly, how much life/filtration capacity is left in the filter, and so forth. This connection enables safe, reliable, and efficient use of filters that need to be periodically replaced. The electronic memory may also be used to signal that a filter has been inserted properly and activate thesmoke evacuation system 300. -
Figure 6A and6B illustrate an embodiment ofcanister assembly 342 inserted intosocket 326.Figure 6A illustratescanister assembly 342 partially inserted into thesocket 326 andFigure 6B illustrates acanister assembly 342 fully inserted into thesocket 326. Referring toFigure 6A , thecanister assembly 342 is partially inserted into thesocket 326 so that theconnection nipple 354 is received by thesecond recess 332 of thesocket 326. Theseal 358 surrounding theconnection nipple 354 makes contact with the inner surface of thesecond recess 332, creating a sealed path for a filtered gas exiting thecanister assembly 342 at thecanister outlet 352 to enter theairflow path 308 of thesmoke evacuation system 300. In one embodiment, theseal 358 may be an O-ring. Other embodiments may includeother seals 358. - The
seal 358 makes contact with the inner walls of thesecond recess 332 to create a seal between theconnection nipple 354 and thesecond recess 332 before thecanister assembly 342 has been fully inserted into thesocket 326. In this partially inserted configuration, theplate 350 does not contact theouter housing 320 of thesmoke evacuation system 300 and the first and secondelectronic connectors -
Figure 6B illustrates acanister assembly 342 fully inserted into thesocket 326. When thecanister assembly 342 is fully inserted into thesocket 326, theseal 358 maintains a seal around theconnection nipple 354 within thesecond recess 332. Additionally, when thecanister assembly 342 has been fully inserted into thesocket 326, theplate 350 makes contact with theouter housing 320 and/or thesecond end 346 of thecanister assembly 342 abuts thetransition surface 330 of thesocket 326 so that thecanister assembly 342 may not be inserted further. Furthermore, when thecanister assembly 342 is fully inserted, the first and secondelectronic connectors - As discussed above, the electronic connection may activate or allow for activation of the
smoke evacuation system 300 so that a suction begins drawing smoke into thefilter 306 through thevacuum tube 112. In the embodiments illustrated herein, the seal creates an airtight boundary between theconnection nipple 354 and thesecond recess 332 of thesocket 326 before the first and secondelectronic connectors seal 358 and the firstelectronic connector 356 may be greater than the longitudinal distance D2 between thesecond recess 332 of thesocket 326 and the secondelectronic connector 340. Longitudinal distances D1 and D2 are labeled inFigure 6A . - Alternatively, the first
electronic connector 356 may be disposed at thefirst end 344 of thefilter canister 342 and the secondelectronic connector 340 may be disposed at or near theplate 350. In this configuration, the longitudinal distance between the seal 458 and the firstelectronic connector 356 may still be greater than the longitudinal distance between thesecond recess 332 of thesocket 326 and the secondelectronic connector 340 so that a seal is created for smoke to pass through into theairflow path 308 before the first and secondelectronic connectors electronic connectors filter canister 342 and in thesocket 326 so long as the relationship between the longitudinal distances mentioned above remain the same. - These configurations ensure that the
smoke evacuation system 300 will not be activated until the seal has been created so that filtered gas may not exit thecanister outlet 352 until a closed path in communication with theairflow path 308 has been established. These configurations may prevent leakage of filtered gas exiting thecanister assembly 342 at thecanister outlet 352. These configurations may also ensure that thesmoke evacuation system 300 does not begin drawing smoke through thefilter 306 until thefilter canister assembly 342 is inserted fully and properly into thesocket 326. -
Figure 7 illustrates a method for connecting a filter canister to a smoke evacuation system 370. In a first step 372, a filter canister is provided. The filter canister may include a body disposed between first and second ends, a connection nipple disposed at the second end, a seal disposed around the connection nipple, a key notch, a cross-sectional shape, and a first electronic connector. - A second step 374 may include aligning the cross-sectional shape of the filter canister with a cross-sectional shape of the socket. The socket may comprise a first recess configured to receive the body of the filter canister, a second recess configured to receive the connection nipple, a transition surface connecting the first and second recesses, and a second electronic connector.
- A third step 376 may include inserting the filter canister partially into the socket until the seal creates an airtight boundary between the connection nipple of the filter canister and the second recess of the socket. A fourth step 378 may include inserting the filter canister further into the socket until the second end of the filter canister makes contact with the transition surface of the socket and until the first and second electronic connectors come into contact with one another.
- The method of inserting the filter canister described herein creates an airtight boundary between the connection nipple of the canister and the second recess of the socket before the electronic connection is made. In this way, the electronic memory, which may be configured to activate the smoke evacuation system, will not be connected until a sealed path that leads from the connection nipple to the airflow path of the smoke evacuation system has been established. This method may thus prevent filtered gas from leaking out of the filter canister before it is fully installed into the socket of the smoke evacuation system.
Claims (15)
- A filter connection for a smoke evacuation system (300), comprising:a filter canister (342) comprising:a body (348) disposed between a first end (344) and a second end (346) of the filter canister;a connection nipple (354) disposed at the second end of the filter canister;a seal (358) disposed around the connection nipple; anda first electronic connector (356);a housing (320) having a socket (326), the socket comprising:a first recess (328) configured to receive the body of the filter canister;a second recess (332) configured to receive the connection nipple; anda second electronic connector (340); andwherein a first longitudinal distance between the seal and the first electronic connector is greater than a second longitudinal distance between the second electronic connector and a first end of the second recess from which the connection nipple is received by the second recess so that a sealed airflow path extending from the connection nipple to the second recess is made before the first and second electronic connectors meet when the filter canister is inserted into the socket.
- The filter connection of claim 1, wherein the seal is an O-ring that creates an airtight boundary between an outside surface of the connection nipple and an inside surface of the second recess.
- The filter connection of claim 2, wherein the seal creates the airtight boundary when the filter canister is partially inserted into the socket.
- The filter connection of any preceding claim, wherein the socket further comprises a transition surface (330) connecting the first and second recesses, wherein the first electronic connector is disposed at the second end (346) of the filter canister and the second electronic connector is disposed at the transition surface of the socket, and optionally, the first electronic connector and second electronic connector come into contact with each other when the filter canister is fully inserted into the socket.
- The filter connection of any one of claims 1-3, wherein the socket further comprises an opening in the housing, wherein the first electronic connector is disposed at the first end (344) of the filter canister and the second electronic connector is disposed at the opening of the socket so that the first and second electronic connectors meet when the filter canister is fully inserted into the socket.
- The filter connection of any preceding claim, wherein the second end (346) of the filter canister comprises a cross-sectional shape having only one line of symmetry, and optionally, the first recess comprises a cross-sectional shape having only one line of symmetry.
- The filter connection of any one of claims 1-5, wherein the second end (346) of the filter canister comprises a key notch (364).
- The filter connection of claim 7, wherein the first recess comprises a key groove (365) configured to correspond to the key notch.
- The filter connection of any one of claims 1-5, wherein the second end (346) of the filter canister comprises an at least partially conical surface.
- The filter connection of claim 9, the socket comprising a partially conical transition surface between the first recess and the second recess, the transition surface being configured to mate with the at least partially conical surface of the filter canister.
- The filter connection of any preceding claim, the connection nipple further comprising a cylindrical outer surface and an inner pathway through which a filtered gas may pass.
- The filter connection of claim 11, wherein the second recess of the socket communicates with an airflow path (308) of the smoke evacuation system, wherein the filtered gas can pass through the inner pathway and into the airflow path of the smoke evacuation system when the filter canister is fully inserted into the socket.
- A method for connecting a filter (306) in a smoke evacuation system (300), the method comprising:providing (705) a filter canister (342);providing a socket (326) in a smoke evacuation system housing (320);inserting (715) the filter canister a first distance into the socket so that the filter canister creates an airtight boundary between the filter canister and the socket; andinserting (720) the filter canister a second distance into the socket so that an electronic connection is made between the filter canister and the socket;wherein the second distance is greater than the first distance.
- The method of claim 13, the method further comprising:
before inserting the filter canister into the socket, aligning (710) the filter canister with the socket so that cross-sectional shapes of the filter canister and socket coincide, the alignment allowing the filter canister to be inserted into the socket. - The method of claim 13, the method further comprising:
before inserting the filter canister into the socket, aligning the filter canister with the socket so that a key notch (364) in the filter canister coincides with a key groove (365) of the socket, the alignment allowing the filter canister to be inserted into the socket.
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US15/826,325 US10631916B2 (en) | 2017-11-29 | 2017-11-29 | Filter connection for a smoke evacuation device |
PCT/IB2018/059370 WO2019106541A1 (en) | 2017-11-29 | 2018-11-27 | Filter connection for a smoke evacuation device |
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-
2017
- 2017-11-29 US US15/826,325 patent/US10631916B2/en active Active
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2018
- 2018-11-27 EP EP18829469.8A patent/EP3717056B1/en active Active
- 2018-11-27 BR BR112020008582-0A patent/BR112020008582A2/en unknown
- 2018-11-27 WO PCT/IB2018/059370 patent/WO2019106541A1/en unknown
- 2018-11-27 CN CN201880077232.3A patent/CN111867668B/en active Active
- 2018-11-27 JP JP2020529383A patent/JP7279043B2/en active Active
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2020
- 2020-03-20 US US16/825,998 patent/US11185363B2/en active Active
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JP7279043B2 (en) | 2023-05-22 |
US20190159827A1 (en) | 2019-05-30 |
US20200214760A1 (en) | 2020-07-09 |
CN111867668A (en) | 2020-10-30 |
EP3717056A1 (en) | 2020-10-07 |
US11185363B2 (en) | 2021-11-30 |
JP2021504057A (en) | 2021-02-15 |
CN111867668B (en) | 2022-11-18 |
US10631916B2 (en) | 2020-04-28 |
BR112020008582A2 (en) | 2020-10-20 |
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